ETC瞬态循环控制技术研究

对我国第Ⅲ阶段排放法规中有关带先进后处理装置的重型柴油车和重型燃气车辆的ETC(european transient cycle)瞬态循环工况的测试控制方法进行研究.研究结果表明:在标准规定的时长为1S的工况内,阶跃时间和稳定时间的分配对测试的相关性影响很大,为了使不同试验的测试结果保持一致性,需对阶跃时间和稳定时间加以规定.     

基于柔性测试技术的节气门反应时间测试系统设计

为了满足ETC(电子节气门)的终检测试要求,开发了双工位的反应时间测试系统.系统以柔性测试技术为核心理念,具有可靠性、灵活性、适用性和可扩展性等特点.     

智能交通收费系统的发展

文章介绍了电子不停车收费系统在国内外的应用情况,对其在天津的应用提出建议并预测了该系统的应用前景。     

基于RapidIO协议的光纤通信系统设计与实现

为了满足嵌入式系统对高速数据传输的需求,提出了一种基于RapidIO协议的光纤通信系统解决方案。利用光模块实现光、电信号的转换,高速收发器实现物理层协议,现场可编程门阵列芯片实现逻辑层协议。测试结果表明,所提方案成本低,性能可靠,数据吞吐率达到1.25 Gb/s。该方案已成功应用于电子不停车收费系统中。     

RFID技术的原理及应用

射频识别技术RFID是一种无线通信技术,它利用射频信号通过空间耦合（交变磁场或电磁场）实现无接触信息传递并通过所传递的信息达到自动识别的目的。本文介绍了射频识别技术的工作原理和技术优势,并列举了RFID常用的应用领域。     

智能交通的应用及其关键技术

阐述了目前智能交通的典型应用场景,并从物联网的网络分层架构对智能交通中涉及的关键技术及其发展现状进行了分析,指出了我国目前在智能交通技术方面的发展现状和发展方向。     

新型ETC数据侦听和故障定位系统的设计

高速公路不停车收费(ETC)已经实现全国联网,用户超过3 200万,参与建设的厂家近20余家,多厂家、多型号设备之间互联互通是系统的关键,如何能够快速准确地定位设备之间兼容性的问题,成为当务之急.针对需求,设计了基于科斯塔斯(Costas)环的新型ETC数据侦听和故障定位系统,描述了系统的工作原理、整体框架和开发思路.该系统已经开发完成并规模应用于ETC联网工作中,对故障定位、协议一致性判定、规范建设起到了不可替代的作用.该系统与现有方案相比其灵敏度提升15 dBm,并且具备可同时侦听多信道、支持数据并发等突出优点.     

Parametric Optimization of Electrothermal-chemical (ETC) Launchers

The research on a 30 mm electrothermal-chemical (ETC) gun including theoretical simulation and experimental results is presented in this paper. The predictions of the theoretical model which is composed of three parts (i.e., pulse forming network, plasma generator and interior ballistics) are in good agreement with the experiments. In addition, we have performed some liquid propellant and solid propellant experiments, respectively. Among the solid propellant experiments, we have investigated the ignition modes of propellant and high velocity launchers. As a result, the 25 : 75 mixture of octane and hydrogen peroxide has a better effect than other liquid propellants. When the propellants are ignited nearby the bottom of projectile in chamber by using an ullage tube connected with the plasma generator, the kinetic energy of projectile will increase, while the chamber pressure will decrease. With a total input electrical energy of 180 kJ, the exit velocity of projectile is up to 2.1 km/s or so.     

组合式公路电子不停车收费系统

分析了高速公路不停车收费系统的优点，提出了适合我国国情的组合式电子不停车收费系统，并介绍该系统的车道系统组成和车道设备功能，阐述了组合式收费技术方案的适用条件及特点。     

Insulin Modulates the Bioenergetic and Thermogenic Capacity of Rat Brown Adipocytes In Vivo by Modulating Mitochondrial Mosaicism

The effects of insulin on the bioenergetic and thermogenic capacity of brown adipocyte mitochondria were investigated by focusing on key mitochondrial proteins. Two-month-old male Wistar rats were treated acutely or chronically with a low or high dose of insulin. Acute low insulin dose increased expression of all electron transport chain complexes and complex IV activity, whereas high dose increased complex II expression. Chronic low insulin dose decreased complex I and cyt c expression while increasing complex II and IV expression and complex IV activity. Chronic high insulin dose decreased complex II, III, cyt c, and increased complex IV expression. Uncoupling protein (UCP) 1 expression was decreased after acute high insulin but increased following chronic insulin treatment. ATP synthase expression was increased after acute and decreased after chronic insulin treatment. Only a high dose of insulin increased ATP synthase activity in acute and decreased it in chronic treatment. ATPase inhibitory factor protein expression was increased in all treated groups. Confocal microscopy showed that key mitochondrial proteins colocalize differently in different mitochondria within a single brown adipocyte, indicating mitochondrial mosaicism. These results suggest that insulin modulates the bioenergetic and thermogenic capacity of rat brown adipocytes in vivo by modulating mitochondrial mosaicism.